Covered elastic cord



May Z0, 1930. E. WEINTRAUB COVERED ELASTIC CORD Ef-E - INVENTOR [Dn/ARD WENT/Mu Patented May 2e, 193e risate? EDWARD WEINTRAUB, OF BROOKLYN, NEXV YORK COVERED ELASTIC CORD Application filed July 23,

The object of this invention is to provide an elastic cord which is composed of a plu rality of elastic threads, each of which isl wound with a protecting thread of cotton,

5 sillz, or similar material, and after being so wound, while under tension, limiting threads arebrought between them, and thereafter protecting threads are wound over all of them i panying drawings, iforming a part'y hereof,1

in which i Figure l shows my improved cord and portions of the machine necessary' for its manufacture; v v

Figure 2 shows a modification thereof; and Figures 3, 4, and 5 are sectional views .fl-taken on the lines 3-3,2.1-4 and 5-5 respectively, looking in the direction of the arrows.

Throughout the Various views of the drawings, similar reference characters designate similar parts. My improved cord is composed of a' plurality of elastics 6,-6", over each ofwhich is spirally4 .wound in the conventional manner with suitable spacing between each convolution and its neighbors, the threads 7 3?" and each of these threads may be of cotton, silk, linen or other suitable material. The elastics may be in anysuitable cross section. although they .are preferably square in cross section or nearly so, and after being wound Withthe protecting threads 7-7, as above stated,

-they are passed over the rollers 8, and then y brought near together between the rollers 9 and between these'threads'is placed a plurality of limiting threads 10. lThis plurality of threads 10 is 'placed taut lWhile the elastic threads on each side are under tension and 5 .While all of these threads are so held, as above 1929. vSerial No. 380,443.

stated, covering threads ll and 12 are applied in the conventional way and preferably oppositely wound, and thereafter the cord is completed and when the tension is removed, the elastic threads 6--6 contract and the plurality of threads l() will loosen between the elastic threads, but in no way interfere with their action or come in contact with them to an extent sufficient to cause them to twist around these threads or to in any Way interferel with their functioning except that it does limit their stretching, as is obvious.

In the modification shown in Figure 2, threads 13- 3 are employed as covering threads and each of these is single instead of vthe plurality of covering threads ll and l2.

Moreover these single covering threads are `wound withspaced spirals.

In view of the foregoing, the functioning of the threads will be readily understood. The elastic threads G-G stretch and retract according to the'tensi-on on them, and they 'are limited in this extension by the limiting 'threads l0 and the threads l0 rest against the spirally wound threads 7-7, but do not interfere with the elastics otherwise than above stated, so that at all times the results are obtained which are above specified. p

While I have shown and described one embodiment of my invention, it is obvious that it is not restricted thereto, but that it is broad en-ough to cover all structures that come within the scope`of the annexed claim.

Having thus described my invention, what I claim is:

'A covered elastic cord `composed of a plurality of spirally wrapped elastic threads, a plurality of adjacent limiting threads inter posed between said elastic threads, and a 'series of oppositely wound covering threads SO over the elastic and limiting threads.

In testimony whereof, I have hereunto set my hand this 23rd day of July, 1929.

v EDWARD VVEINTRAUB. 

